There are no reports which demonstrate the direct large area growth of SnS 2 on cellulose paper to fabricate an efficient broadband photodetector, complemented by a detailed theoretical understanding to understand the underlying physics of this device. To study the charge transport mechanism of this unique heterojunction, first principles calculations are performed to theoretically estimate the band gap and the electron affinity values that lead to a detailed understanding of the band alignment in this heterojunction. Graphene was dip coated on cellulose paper followed by the direct growth of SnS 2 on Gr/cellulose paper by a hydrothermal method.
This work demonstrates the solution processed fabrication of a SnS 2/graphene (Gr) heterojunction on a biodegradable cellulose paper substrate for its utilization as a broadband photodetector.
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